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We list hundreds of Clinical Trials about "Reduced visual acuity associated with decline reading efficiency" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.
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Reading can be an uncomfortable and difficult task for some people. Symptoms include unpleasant somatic and perceptual effects, such as eye-strain, headache, and blurred text, despite normal visual acuity. This condition has been called Visual Discomfort, but little is known about the symptoms and frequency of reading problems associated with this disorder. Several studies have proposed that Visual Discomfort is caused by increased noise in the visual system due to spreading co...
Patient-reported vision-related quality of life (QOL) outcomes are increasingly incorporated into clinical trials of new treatments for age-related macular degeneration (AMD). In patients with central visual field defects they often do not correlate with distance visual acuity changes as evaluated according to the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. Therefore there is the need for better correlated visual acuity (VA) outcome measures for these patients....
This study involves the use of VisionQuest 20/20 which is a new software program to test visual acuity in children. The purpose of this study is to compare the results of VisionQuest 20/20 to two other ways to measure visual acuity. The two other tests are a standard eye exam by an ophthalmologist and electronic visual acuity (EVA) testing, a computerized version of a standard eye test. It is important to identify vision problems in children as early as possible. These ...
A multi-centre non-randomized clinical investigation to assess multifocal visual outcomes using different near additions, for the treatment of aphakia after cataract removal.
The purpose of the study is to determine whether implantation of a multifocal IOL with a modified addition at lens plane(Restor +3) results in better intermediate visual acuity with similar performance at distance and near compared to other multifocal IOL with similar design but with higher addition at lens plane. Patient's contrast sensitivity of vision and best reading distance following Restor +3 implantation were also assessed. Study hypothesis: the implantation of an intr...
The effect of tinted filters and illumination on the visual performance of patients with low vision (i.e., individuals with reduced vision that is uncorrectable with glasses, surgery or treatments) has been a topic of research and discussion for many years, yet there is no current consensus or practice standard for the evaluation and recommendation of colored filters and/or illumination intensity. Anecdotally, there have been many subjective reports of improvement in visual fun...
dyslexia is often considered like a phonological deficit but some researches show that a visual attention (V-A) deficit can occur in dyslexia. The investigator want to show that some dyslexics have a reduced V-A field in visual search when the investigator use separable feature (letter-like). If the investigator demonstrate that, he will show that V-A deficit can be transpose to an ability acquired before reading, the visual search. Therefore, the V-A deficit can't be a ...
Nurses participate to geriatric evaluations for falling patients. For these patients, it is recommended to evaluate,especially, visual acuity but this is not currently done because it is difficult to systematically combine with an ophthalmologic consultation. The HAS french recommendations propose to detect visual acuity deficiency using Monoyer and Parinaud scales, without specifying the professional qualification. According to the nurse competence decree of State Graduates, ...
Amblyopia, or lazy eye, is best defined by the AAO as a unilateral or bilateral reduction of the best corrected visual acuity that occurs in the setting of an otherwise normal eye, or a structural abnormality involving the eye or visual pathway with reduction in visual acuity that cannot be attributed only to the effect of the structural abnormality. Which causes an abnormal visual experience early in life, with consequences such as deficiencies in the ability to perceive contr...
Charles Bonnet Syndrome (CBS) is defined by the occurence of visual hallucinations (VH) in the absence of any mental disorder. Elderly patients with reduced visual acuity due to ophthalmic diseases are most affected. Conditions are often associated with the syndrome of age-related macular degeneration, cataract or glaucoma. Existing data on the syndrome's prevalence in Europe reveal diverse results. Aim of this study was to assess the prevalence of CBS in patients with low visu...
Interventional, parallel groups, single center trial with a prospective design
The presented study investigates standardized visual cueing in reading and visual spatial task as a treatment method for spatial neglect. In a randomized controlled design patients receive either cued reading and visual spatial tasks (intervention) or treatment which is unspecific to neglect (control). In the intervention condition, patients with left-sided neglect receive intense training, including reading and visual spatial task with standardized and adapted visual cueing b...
Improvement in visual acuity and retinal anatomy one year after surgery is assessed and compared to data preoperative and 3 months after surgery
The strabismus impacts binocular visual acuity and stereoscopy. Thus, driving capacities of patients with strabismus may be reduced. The goal of this work is to study the possible amelioration of driving ability after strabismus surgery and to compare the driving capacities of patients with strabismus to a normal population; Patients will be tested before and after strabismus surgery using a driving simulator, binocular visual field and binocular visual acuity.
The goal of this randomized clinical trial is to investigate when it is optimal to treat the eye disease epiretinal fibrosis. Hypothesis: In a population of patients with symptomatic idiopathic epiretinal fibrosis and visual acuity above 0.4, the best long term outcome measured by visual acuity is achieved by early surgery compared to periodic controls until a continual loss of visual acuity has been ensure followed by surgery.
The purpose of this study is to evaluate reading performance in the visual periphery by simulating central vision loss using a computer-controlled gaze-contingent display with an eye tracker. Participants will read a page of text at a comfortable rate. Several manipulations hypothesized to improve reading will be tested, such as an inverted-text "spotlight" of a single word that follows the participant's gaze.
Amblyopia is characterized by a reduction in visual acuity, contrast sensitivity, and binocular visual functions. The two main causes of amblyopia are anisometropia and strabismus which alter the synaptic connections between neurons along the visual pathway. Current treatment for amblyopia has indicated that the younger the amblyope, the greater the effect of treatment. The purpose of this study is to determine if standard amblyopia treatment improved visual acuity in adult amb...
Introduction: Prematurity has been more frequent in industrialized countries, which is a risk factor for delay in child development. Delays in the development of visual system could be highlighted. However, studies that evaluate or stimulate the visual system in preterm infant (PT) at an early age and hospitalized in a neonatal unit care (NUC) are scarce. Objective: To compare visual acuity of PT and full term (FT) infants. In addition, to verify the effect of the early visual...
The aim of this project is to determine how shared reading promotes child language development, and to use this knowledge to make it an effective language-boosting tool for children from all social and economic backgrounds.
Hyperopia (farsightedness) has been reported to be associated with reduced visual perceptual and reading abilities. However, there is controversy regarding whether or not to prescribe for low to moderate amounts of hyperopia. The Correction of Hyperopia In Children Study (CHICS) is a placebo-controlled, randomized, masked investigation of the effect of spectacle correction for moderate amounts of hyperopia on visual function, symptoms, attention, and reading skills in children.
The purpose of this survey is to collect visual acuity data from patients with LHON in order to establish the clinical course (natural history) and visual acuity outcomes in patients with a genetically confirmed diagnosis of LHON. In addition, this survey will generate data that will serve as comparator for the open-label study SNT-IV-006.
This study will determine if the interdisciplinary team low vision rehabilitation program is more effective than basic low vision care provided by an optometrist working alone in improving visual reading ability in veterans with macular diseases and best corrected visual acuity of 20/50 to 20/100.
Hemianopia refers to compromised vision in one half of the visual field, in either one or both eyes. Hemianopic Alexia (HA) is a reading disorder related to such impairment, usually caused by stroke or head injury. In order to read, participants have to move their eyes along a line of text three to four times per second. Such eye movements are called saccades. One makes use of peripheral visual information to the right (if reading from left to right, e.g., in English) or to the...
The investigators are interested in seeing how people with low vision (decreased visual acuity or restricted visual fields) instill eye drops into their own eyes. The investigators hypothesis is that this population will have more difficulty with self-instillation of drops than a better-seeing population. The investigators aim to explore whatever factors may be involved in preventing this population from getting prescribed eyedrops into their eyes, whether it is more related to...
The purpose of this study is to determine whether music training is an effective treatment of reading disorders